关键词: 冷连轧, 弹性变形, 塑性变形, 数值积分, 轧制力模型

Abstract: Taking account of the elastic/plastic deformation of both rolled piece and roller in cold continuous rolling process, the deformation zone of rolled piece can be divided into three subzones, i.e. the entry elastic deformation, plastic deformation and exit elastic deformation. The rolling force in the plastic deformation and entry elastic deformation subzones is computed iteratively with numerical integration. The rolling force in the exit elastic deformation subzones is calculated also. At last, the model to calculate rolling force of No.5 mill is obtained via the sum of the two rolling forces calculated. Some simulations were done using different steel grades specifications of rolled strips of which the relevant data were recorded in situ. This force model is thus proved accurate and able to meet the precision requirements of precomputation for cold continuous rolling process.